From 36777d962082bdfd2f8e45d5cd748b21838d76cc Mon Sep 17 00:00:00 2001 From: Samuel Holland Date: Thu, 29 Apr 2021 22:58:58 -0500 Subject: [PATCH] arm64: dts: allwinner: pinephone: Add support for Bluetooth audio The PinePhone has a Bluetooth chip with its PCM interface connected to AIF3. Add the DAI link so headeset audio can be routed in hardware. Even though the link is 16 bit PCM, configuring the link a 32-bit slot is required for compatibility with AIF2, which also uses a 32-bit slot, and which shares clock dividers with AIF3. Using equal clock frequencies allows the modem and headset to be used at the same time. Signed-off-by: Samuel Holland Signed-off-by: Maxime Ripard Link: https://lore.kernel.org/r/20210430035859.3487-7-samuel@sholland.org --- .../dts/allwinner/sun50i-a64-pinephone.dtsi | 24 +++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi index 79adea3f8cc16..4759cd9768438 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi @@ -25,6 +25,11 @@ /* Backlight configuration differs per PinePhone revision. */ }; + bt_sco_codec: bt-sco-codec { + #sound-dai-cells = <1>; + compatible = "linux,bt-sco"; + }; + chosen { stdout-path = "serial0:115200n8"; }; @@ -91,6 +96,8 @@ }; &codec { + pinctrl-names = "default"; + pinctrl-0 = <&aif3_pins>; status = "okay"; }; @@ -447,6 +454,23 @@ "MIC1", "Internal Microphone", "Headset Microphone", "HBIAS", "MIC2", "Headset Microphone"; + + simple-audio-card,dai-link@2 { + format = "dsp_a"; + frame-master = <&link2_codec>; + bitclock-master = <&link2_codec>; + bitclock-inversion; + + link2_cpu: cpu { + sound-dai = <&bt_sco_codec 0>; + }; + + link2_codec: codec { + sound-dai = <&codec 2>; + dai-tdm-slot-num = <1>; + dai-tdm-slot-width = <32>; + }; + }; }; &uart0 { -- 2.30.2